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deepmatching_matlab.cpp
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Mon, Jul 29, 16:20

deepmatching_matlab.cpp
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/*
Copyright (C) 2014 Jerome Revaud
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#include <mex.h>
#include <assert.h>
#include <math.h>
#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <iostream>
void std_printf(const char* format, ... ) {
va_list arglist;
va_start( arglist, format );
char buffer[1024];
vsprintf( buffer, format, arglist );
va_end(arglist);
mexPrintf(buffer);
}
void err_printf(const char* format, ... ) {
va_list arglist;
va_start( arglist, format );
char buffer[1024];
vsprintf( buffer, format, arglist );
va_end(arglist);
mexErrMsgTxt(buffer);
}
#include "image.h"
#include "deep_matching.h"
#include "io.h"
#include "main.h"
static inline bool ispowerof2( long n ) {
return (n & (n-1))==0;
}
color_image_t *input3darray_to_color_image(const mxArray *p){
const int *dims = mxGetDimensions(p);
const int h = dims[0], w = dims[1];
assert( dims[2]==3 );
float *in = (float*) mxGetData(p);
color_image_t *out = color_image_new(w, h);
for(int c=0 ; c<3 ; c++){
float *inptr = in + c*w*h;
float *outptr = out->c1 + c*w*h;
for( int j=0 ; j<h ; j++){
for( int i=0 ; i<w ; i++){
outptr[j*w+i] = inptr[i*h+j];
}
}
}
return out;
}
void corres_to_output(float_image *corres, mxArray *p){
const int h = corres->ty, w = corres->tx;
float *data = (float*) mxGetData(p);
for( int j=0 ; j<h ; j++) {
for( int i=0 ; i<w ; i++) {
data[i*h+j] = corres->pixels[j*w+i];
}
}
}
void mexFunction( int nl, mxArray *pl[], int nr, const mxArray *pr[] ) {
if( nr==0 ) {
usage(MATLAB_OPTIONS);
return;
}
if ( nl != 1){
usage(MATLAB_OPTIONS);
mexErrMsgTxt("error: returns one output");
}
if( nr < 2 || nr > 3){
usage(MATLAB_OPTIONS);
mexErrMsgTxt("error: takes two to four inputs");
}
// The code is originally written for C-order arrays.
// We thus transpose all arrays in this mex-function which is not efficient...
const int *pDims;
if(mxGetNumberOfDimensions(pr[0]) != 3) mexErrMsgTxt("input images must have 3 dimensions");
if(!mxIsClass(pr[0], "single")) mexErrMsgTxt("input images must be single");
pDims = mxGetDimensions(pr[0]);
if( pDims[2]!=3 ) mexErrMsgTxt("input images must have 3 channels");
const int h = pDims[0], w = pDims[1];
color_image_t *cim1 = input3darray_to_color_image( pr[0] );
if(mxGetNumberOfDimensions(pr[1]) != 3) mexErrMsgTxt("input images must have 3 dimensions");
if(!mxIsClass(pr[1], "single")) mexErrMsgTxt("input images must be single");
pDims = mxGetDimensions(pr[1]);
if( pDims[2]!=3) mexErrMsgTxt("input images must have 3 channels");
color_image_t *cim2 = input3darray_to_color_image( pr[1] );
// convert images to gray
image_t *im1=image_gray_from_color(cim1), *im2=image_gray_from_color(cim2);;
color_image_delete(cim1);
color_image_delete(cim2);
// set params to default
dm_params_t params;
set_default_dm_params(&params);
scalerot_params_t sr_params;
set_default_scalerot_params(&sr_params);
bool use_scalerot = false;
float fx=1, fy=1;
// read options
if( nr == 3 ){
char *options = mxArrayToString(pr[2]);
if( !options ) mexErrMsgTxt("Third parameter must be a string");
int argc=0;
const char* argv[256];
argv[argc] = strtok(options," ");
while(argv[argc]!=NULL)
argv[++argc] = strtok(NULL," ");
parse_options(&params, &sr_params, &use_scalerot, &fx, &fy, argc, argv, MATLAB_OPTIONS, &im1, &im2);
}
if( use_scalerot )
assert( params.ngh_rad == 0 || !"max trans cannot be used in full scale and rotation mode");
else
if( params.subsample_ref && (!ispowerof2(im1->width) || !ispowerof2(im1->height)) ) {
std_printf("WARNING: first image has dimension which are not power-of-2\n");
std_printf("For improved results, you should consider resizing the images with '-resize <w> <h>'\n");
}
// compute deep matching
// float_image* corres = use_scalerot ?
// deep_matching_scale_rot( im1, im2, &params, &sr_params ) :
// deep_matching ( im1, im2, &params, NULL ); // standard call
cout << "###########################################################" << endl;
float_image* corres = deep_matching ( im1, im2, &params, NULL ); // standard call
// output
pl[0] = mxCreateNumericMatrix(corres->ty, corres->tx, mxSINGLE_CLASS, mxREAL);
corres_to_output(corres, pl[0]);
image_delete(im1);
image_delete(im2);
free_image(corres);
return;
}

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